What does groundless mean?
Groundless means that something has no sound basis in facts, evidence, logic, or reasonable justification. The most common use is to describe allegations, claims, accusations, suspicions, or fears that are unsupported. Saying that an accusation is groundless indicates not merely that it is unproved, but that the evidence available does not provide a credible foundation for it. The word can also describe an idea, expectation, or fear that lacks a sound basis. Its image is powerful: just as a person or structure needs solid ground beneath it, a claim needs evidence and reasoning to support it. In legal and public discussion, “groundless” can be forceful, so it is often used when a statement is regarded as having no legitimate foundation. The related noun “groundlessness” names the condition, while “groundlessly” describes an action performed without justification.
adjectiveHaving no basis in facts, evidence, or reason; unfounded. It can also describe something lacking support or a secure foundation.
- Having no basis in facts, evidence, or reason; unfounded.
- Lacking support, foundation, or a secure basis.
"The committee dismissed the allegations as completely groundless."
"The witnesses denied spreading groundless rumors about the company."
"The report identified several weaknesses in the proposal, but its criticism of the staffing plan was groundless."
Groundless takes an image of standing without solid ground and turns it into a warning against beliefs that have no evidence beneath them.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does groundless come from?
Groundless is an English formation combining the established word “ground” with the suffix “-less,” meaning “without.” In the relevant sense, “ground” refers to a basis, foundation, or justification, not merely to soil or physical footing. The adjective developed figuratively from this older sense of ground, becoming a standard way of describing statements and beliefs that lack support. Related forms such as grounded, grounding, and background preserve the same English base.
Related word forms
How groundless is actually used
The word is neutral to formal in register and is common in journalism, law, criticism, and everyday discussion. It often describes allegations, claims, suspicions, fears, or concerns that lack supporting evidence.
Easily confused with groundless
A groundless claim has no supporting evidence, whereas a grounded claim is based on facts or reliable information.